Rainbow Electronics MAX17480 - Manual (Page 7)

MAX17480
AMD 2-/3-Output Mobile Serial
VID Controller
_______________________________________________________________________________________ 7
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 2, V IN = 12V, V CC = V DD = V IN3 = SHDN = PGD_IN = 5V, V DDIO = 1.8V, OPTION = GNDS_ = AGND = PGND,
FBDC_ = FBAC_ = OUT3 = CSP_ = CSN_ = 1.2V, all DAC codes set to the 1.2V code, T A = -40°C to +105°C, unless otherwise
noted. Typical values are at T A = +25 °C.) (Note 5)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
INPUT SUPPLIES
V IN Drain of external high-side MOSFET 4 26
V BIAS V CC , V DD 4.5 5.5
V IN3 2.7 5.5
Input Voltage Range
V DDIO 1.0 2.7
V
V CC Undervoltage-Lockout
Threshold
V UVLO
V CC rising, 50mV typical hysteresis,
latched, UV fault
4.10 4.45 V
V DDIO Undervoltage-Lockout
Threshold
V DDIO rising, 100mV typical hysteresis,
latched, UV fault
0.7 0.9 V
V IN3 Undervoltage-Lockout
Threshold
V IN3 rising, 100mV typical hysteresis 2.5 2.7 V
Quiescent Supply Current (V CC ) I CC
Skip mode, FBDC_ and OUT3 forced
above their regulation points
10 mA
Quiescent Supply Current I DDIO 25 µA
Quiescent Supply Current (IN3) I IN3
Skip mode, OUT3 forced above its
regulation point
200 µA
INTERNAL DACs, SLEW RATE, PHASE SHIFT
DAC codes from
0.8375V to 1.5500V
-0.7 +0.7 %
DAC codes from
0.5000V to 0.8250V
-7.5 +7.5 DC Output Voltage Accuracy V OUT
Measured at FBDC_
for the core SMPSs;
measured at OUT3
for the NB SMPS;
30% duty cycle,
no load, ILIM3 =
V
CC , V OUT3 = V DAC3
+ 12.5mV (Note 3)
DAC codes from
12.5mV to 0.4875V
-15 +15
mV
R
TIME
= 143k ,
SR = 6.25mV/µs
-10 +10
Slew-Rate Accuracy During transition
R TIME = 35.7k to
357k , SR =
25mV/µs to 2.5mV/µs
-15 +15
%
R OSC = 143k (f
OSC1 = f OSC2 = 300kHz
nominal, f OSC3 = 600kHz nominal)
-9 +9
Switching Frequency Accuracy
f
OSC1,
f
OSC2,
f OSC3
R
OSC
= 71.4k (f
OSC1
= f
OSC2
= 600kHz
nominal, f OSC3 = 1.2MHz nominal) to
432k (f OSC1 = f OSC2 = 99kHz nominal,
f OSC3 = 199kHz nominal)
-12 +12
%